<template>
  <div>
    <el-breadcrumb class="breadcrumb">
      <el-breadcrumb-item>首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card class="box-card">
      <!-- 搜索框 -->
      <el-row :gutter='20'>
        <el-col :span='8'>
          <el-input placeholder="请输入内容" v-model='queryInfo.query' clearable
            @clear='getUserList'>
            <el-button slot="append" icon="el-icon-search" @click="getUserList">
            </el-button>
          </el-input>
        </el-col>
        <el-col :span='4'>
          <el-button type='primary' @click='addDialogVisible=true'>添加用户
          </el-button>
        </el-col>
      </el-row>
      <!-- 用户列表 -->
      <el-table :data='userlist' border stripe>
        <el-table-column type='index'> </el-table-column>
        <el-table-column label="姓名" prop='username'> </el-table-column>
        <el-table-column label="邮箱" prop='email'> </el-table-column>
        <el-table-column label="电话" prop='mobile'> </el-table-column>
        <el-table-column label="角色" prop='role_name'> </el-table-column>
        <el-table-column label="状态">
          <!-- 作用域插槽 -->
          <template slot-scope="scope">
            <el-switch v-model='scope.row.mg_state'
              @change='userStateChanged(scope.row)'>
            </el-switch>
          </template>
        </el-table-column>
        <!-- 表格里嵌套其他组件 所以使用作用域插槽 -->
        <el-table-column label="操作" width='180px'>
          <template slot-scope="scope">
            <!-- 修改按钮 -->
            <el-button type='primary' icon='el-icon-edit' size='mini'
              @click="showEditDialog(scope.row.id)">
            </el-button>
            <!-- 删除按钮 -->
            <el-button type='danger' icon='el-icon-delete' size='mini'
              @click="removeUserById(scope.row.id)">
            </el-button>
            <!-- 管理按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top"
              :enterable='false'>
              <el-button type='warning' icon='el-icon-setting' size='mini'
                @click="setRole(scope.row)">
              </el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 -->
      <el-pagination @size-change="handleSizeChange"
        @current-change="handleCurrentChange" :current-page="queryInfo.pagenum"
        :page-sizes="[1,2,5,10]" :page-size="queryInfo.pagesize"
        layout="total,sizes,prev,pager,next,jumper" :total="total">
      </el-pagination>
    </el-card>
    <!-- 添加用户的弹出框 -->
    <el-dialog title="添加用户" width="50%" :visible.sync='addDialogVisible'
      @close='addDialogClose' :close-on-click-modal='false'>
      <el-form label-width="70px" :model='addForm' :rules='addFormRules'
        ref='addFormRef'>
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改用户信息的弹出框 -->
    <el-dialog title="修改用户信息" :visible.sync='editDialogVisible' width="30%"
      @close='editDialogClose' :close-on-click-modal='false'>
      <el-form label-width="70px" :model="editForm" :rules='addFormRules'
        ref="editFormRef">
        <el-form-item label="用户名" prop=" ">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUserInfo()">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRolesDialogVisible" width="30%"
      @close='setRolesDialogClosed'>
      <div>
        <p>当前的用户: {{userInfo.username}}</p>
        <p>当前的角色: {{userInfo.role_name}}</p>
        <p>
          分配新角色:
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in  rolesList" :key="item.id"
              :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRolesDialogVisible = false">取 消
        </el-button>
        <el-button type="primary" @click="saveRoleInfo()">确 定
        </el-button>
      </span>
    </el-dialog>
  </div>
</template>
<style lang="less" scoped>
.breadcrumb {
  margin-bottom: 20px;
  .el-card {
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.15);
  }
  .el-total {
    margin-top: 15px;
    font-size: 12px;
  }
}
.el-pagination {
  margin-top: 15px;
}
</style>
<script>
export default {
  data () {
    const checkEmail = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/
      if (regEmail.test(value)) {
        return cb()
      }
      cb(this.$message.error('请输入合法的邮箱'))
    }
    const checkMobile = (rule, value, cb) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(this.$message.error('请输入合法的手机号'))
    }
    return {
      // 验证邮箱的规则
      // 获取用户列表单的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 2
      },
      userlist: [],
      total: 0,
      // 控制对话框的显示与隐藏
      addDialogVisible: false,
      // 控制分配角色框的显示与隐藏
      setRolesDialogVisible: false,
      // 控制修改框的显示与隐藏
      editDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      editForm: {
        email: '',
        mobile: ''
      },
      // 需要被分配角色的用户信息
      userInfo: {},
      // 所有角色的数据列表
      rolesList: [],
      // 已选中角色的id
      selectedRoleId: '',
      // 添加表单的数据验证规则
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱地址', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入邮箱地址', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }

        ]
      }
    }
  },
  created () {
    // 获取用户数据
    this.getUserList()
  },
  methods: {
    async getUserList () {
      const res = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取用户信息洗白')
      this.userlist = res.data.users
      this.total = res.data.total
    },
    // 监听pagesize 改变事件
    handleSizeChange (newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变
    handleCurrentChange (newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 修改状态
    async userStateChanged (userinfo) {
      const res = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
      if (res.meta.status !== 200) return this.$message.error('更改状态失败')
      this.$message.success('更新状态成功')
    },
    // 监听添加用户对话框关闭事件
    addDialogClose () {
      this.$refs.addFormRef.resetFields()
    },
    // 添加用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        const res = await this.$http.post('users', this.addForm)
        console.log(res)
        if (res.meta.status !== 201) return this.$message.error('添加用户失败')
        this.$message.success('添加用户成功')
        this.addDialogVisible = false
        this.getUserList()
      })
    },
    // 监听用户对话框关闭事件
    async showEditDialog (id) {
      const res = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) return this.$message.error('获取用户信息失败')
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 监听修改框的关闭事件
    editDialogClose () {
      this.$refs.editFormRef.resetFields()
    },
    // 修改用户信息
    editUserInfo () {
      this.$refs.editFormRef.validate(async valid => {
        console.log(valid)
        if (!valid) return
        const res = await this.$http.put('users/' + this.editForm.id, { email: this.editForm.email, mobile: this.editForm.mobile })
        if (res.meta.status !== 200) return this.$message.error('修改信息失败')
        this.$message.success('修改用户信息成功')
        this.editDialogVisible = false
        this.getUserList()
      })
    },
    // 删除用户信息
    async removeUserById (id) {
      // 弹框询问是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)
      // 如果用户确认删除 则返回一个字符串  confirm
      // 如果用户取消删除 则返回一个字符串    cancel
      // 取消删除操作
      if (confirmResult !== 'confirm') return this.$message.info('已取消删除')
      // 删除操作
      if (confirmResult === 'confirm') {
        const res = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) return this.$message.error('删除用户失败')
        if (this.userlist.length === 1) {
          this.queryInfo.pagenum = this.queryInfo.pagenum === 1 ? 1 : this.queryInfo.pagenum - 1
        }
        this.$message.success('删除用户成功')
        this.getUserList()
      }
    },
    // 展示分配角色的对话框
    async setRole (userinfo) {
      this.userInfo = userinfo
      // 在展示对话框之前 先获取所有的角色数据列表
      const res = await this.$http.get('roles')
      if (res.meta.status !== 200) return this.$message.error('获取角色数据失败')
      this.rolesList = res.data
      this.setRolesDialogVisible = true
    },
    // 点击确定重新分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }
      const res = await this.$http.put(`users/${this.userInfo.id}/role`, { rid: this.selectedRoleId })
      if (res.meta.status !== 200) return this.$message.error('分配角色失败')
      this.$message.success('分配角色成功')
      this.getUserList()
      this.setRolesDialogVisible = false
    },
    // 监听分配角色框的关闭事件
    setRolesDialogClosed () {
      this.userInfo = ''
      this.selectedRoleId = ''
    }
  }

}
</script>
